<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			*{
				padding: 0;
				margin: 0;
				margin-top:0;
			}
			.footer{
				width: 1000px;
				height: 400px;
				margin: 0 auto;
				background-color: red;
			}
		</style>
	</head>
	<body>
		<div class="footer">
			底部
		</div>
		 
	</body>
</html>
